By way of supporting information he provides an extensive list of historical explosions, earthquakes, airplane crashes and scientific discoveries that also happened on April 26 (although the logic of why this would influence North Korean military planning is left to the reader to decide), washed down with a series of references to tinfoil favorite Operation Jade Helm, which Alex Jones "revealed" as President Obama's secret plan to impose martial law and steal all the guns in Texas.
"What if North Korea's nuclear test isn't their usual underground test? What if it's a "test' of their newly unveiled submarine based ballistic missiles… from a sub off the coast of the U.S.?"
FEMA, for its part, has called all of this a load of nonsense, telling Motherboard in a lengthy emailed statement:
"I do not think anything will happen tomorrow. But I think this stuff is important to know and be aware of. It is all part of a bigger plan methinks. These people at the top play chess, not checkers."
It's unlikely to be a satisfactory answer for the denizens of /r/conspiracy and the wider Alex Jones echo chamber, but with less than seven hours to midnight, the truth about 4/26 will be known soon enough.
"We've been planning Gotham Shield 2017 for about a year.
FEMA plans and conducts exercises with other federal agencies and states throughout the year, on a variety of natural & manmade disasters (to include hurricanes, tsunamis, etc.)
The Gotham Shield 2017 exercise is a four-day functional exercise focused on interagency and multi-state coordination during an Improvised Nuclear Device detonation in northern New Jersey. […]
This forum will expand the ability to coordinate at a local and national level, further developing relationships that will support more effective response and recovery operations during a nuclear incident."